28551940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{20107}}^1$

素因数の和:20187

約数の個数: 24

約数和(自身を含む): 60806592

約数和(自身を除く): 32254652

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 20107, 40214, 80428, 100535, 201070, 402140, 1427597, 2855194, 5710388, 7137985, 14275970, 28551940]

約数ペア:

[(1, 28551940), (2, 14275970), (4, 7137985), (5, 5710388), (10, 2855194), (20, 1427597), (71, 402140), (142, 201070), (284, 100535), (355, 80428), (710, 40214), (1420, 20107)]